Vehicle indoor lighting lamp

Abstract

To provide a vehicle indoor lighting lamp which can directly or indirectly light the interior of a vehicle cabin more properly.SOLUTION: A vehicle indoor lighting lamp 1 includes a bezel 10, a substrate 20, a retainer 30, a reflector 40, and a lens 50. The retainer 30 is located at one side in a lamination direction Z of the substrate 20 and has: an annular light guide part 31 which guides light from a second light emitting element 22 mounted on the substrate 20; and an opaque part 32 which has a light shielding property and covers a periphery of the light guide part 31 so that the light from the second light emitting element 22 is radiated from an annular exposed surface 31a at the radial outer side in the light guide part 31 to the attachment panel 100 side.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to an interior lighting device for a vehicle. [Background technology]

[0002] As an example of a conventional technology relating to interior vehicle lighting, Patent Document 1 discloses an interior vehicle lighting that includes a direct lighting unit that directly illuminates the interior of the vehicle, and an indirect lighting unit that indirectly illuminates a mounting panel of the vehicle on the outer periphery of the direct lighting unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-138808 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the vehicle interior lighting described in Patent Document 1 has room for further improvement, for example, in terms of improving the design of direct lighting and indirect lighting.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle interior lamp that can more appropriately provide direct and indirect illumination inside the vehicle interior. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the vehicle interior lighting lamp of the present invention includes: a bezel having a locking portion that locks to a mounting panel of a vehicle and having a storage space that is open toward the interior of the vehicle cabin on one side in a stacking direction that intersects with the mounting panel; a substrate that is housed in the storage space of the bezel and has, on one side in the stacking direction, a first light-emitting element for direct illumination and a second light-emitting element for indirect illumination; a retainer that is located on one side of the substrate in the stacking direction and has an annular light-guiding portion that guides light from the second light-emitting element; and an opaque portion that has light-blocking properties and covers the periphery of the light-guiding portion so that light from the second light-emitting element is irradiated toward the mounting panel from a radially outer annular exposed surface of the light-guiding portion; a reflector that is located on one side of the substrate in the stacking direction and has a reflective wall that surrounds the periphery of the first light-emitting element and reflects light from the first light-emitting element to one side in the stacking direction; and a lens that covers one side of the reflector in the stacking direction and diffuses the light of the first light-emitting element reflected by the reflective wall into the vehicle cabin. [Effects of the Invention]

[0007] In the vehicle interior lamp according to the present invention, the retainer has an annular light-guiding portion that guides light from the second light-emitting element, and an opaque portion that has light-blocking properties and covers the periphery of the light-guiding portion so that the light from the second light-emitting element is irradiated toward the mounting panel from the radially outer annular exposed surface of the light-guiding portion. With this configuration, the vehicle interior lamp can, for example, more efficiently or effectively irradiate the indirect lighting light from the second light-emitting element toward the mounting panel from the radially outer annular exposed surface of the light-guiding portion by the opaque portion of the retainer. As a result, the vehicle interior lamp has the effect of more appropriately illuminating the vehicle interior directly and indirectly. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an exemplary perspective view of a vehicle interior lighting device according to an embodiment. [Figure 2] FIG. 2 is an exemplary exploded perspective view of a vehicle interior lighting lamp according to the embodiment. [Figure 3]FIG. 3 is an exemplary perspective view of the rear surface side of the substrate of the vehicle interior illumination lamp according to the embodiment. [Figure 4] FIG. 4 is an exemplary plan view of the vehicle interior lighting according to the embodiment. [Figure 5] FIG. 5 is an exemplary cross-sectional view of a vehicle interior lighting lamp according to the embodiment. [Figure 6] FIG. 6 is an exemplary cross-sectional view showing the configuration of a retainer of a vehicle interior illumination lamp according to an embodiment. [Figure 7] FIG. 7 is an enlarged view of the vicinity of the light introducing portion of the retainer in FIG. [Figure 8] FIG. 8 is an exemplary cross-sectional view perpendicular to the circumferential direction of the retainer of the vehicle interior illumination lamp according to the embodiment. [Figure 9] FIG. 9 is an exemplary plan view of the interior side of the vehicle interior illumination lamp according to the embodiment. [Figure 10] FIG. 10 is an exemplary cross-sectional view of a vehicle interior illumination lamp according to a first modified example. [Figure 11] FIG. 11 is an exemplary cross-sectional view perpendicular to the circumferential direction of a retainer of a vehicle interior illumination lamp according to a first modified example. [Figure 12] FIG. 12 is an exemplary cross-sectional view of a vehicle interior lamp according to a second modified example. [Figure 13] FIG. 13 is an exemplary cross-sectional view perpendicular to the circumferential direction of a retainer of a vehicle interior illumination lamp according to a second modified example. [Figure 14] FIG. 14 is an exemplary cross-sectional view of a vehicle interior lamp according to a third modified example. [Figure 15] FIG. 15 is an exemplary cross-sectional view perpendicular to the circumferential direction of a retainer of a vehicle interior illumination lamp according to a third modified example. [Figure 16] FIG. 16 is an exemplary perspective view of a shadow lighting cover for a vehicle interior illumination lamp according to a third modified example. [Figure 17] FIG. 17 is an exemplary perspective view showing a shadow pattern projected through a shadow lighting cover of a vehicle interior illumination lamp according to a third modified example. [Figure 18]FIG. 18 is an exemplary perspective view showing a modified example of the shadow lighting cover. [Figure 19] FIG. 19 is an exemplary perspective view showing a shadow pattern projected through a modified shadow lighting cover. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments and modifications of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments and modifications. Furthermore, the components in the following embodiments and modifications include those that are easily replaceable by those skilled in the art, or those that are substantially identical.

[0010] Furthermore, the embodiments and modifications disclosed below include similar components. Therefore, in the following, the similar components are given the same reference numerals, and redundant explanations will be omitted. Note that in this specification, ordinal numbers are used only to distinguish between parts, members, portions, positions, directions, etc., and do not indicate order or priority.

[0011] [Embodiment] FIG. 1 is a perspective view of a vehicle interior lighting device 1 according to an embodiment. The vehicle interior lighting device 1 of this embodiment shown in FIG. 1 is mounted, for example, on a mounting panel 100 that constitutes part of the vehicle interior, and illuminates the interior of the vehicle. The vehicle interior lighting device 1 is, for example, a room lamp installed on the ceiling surface of the vehicle interior, and is turned on and off in response to an operation by a vehicle occupant or the opening and closing of a vehicle door. The vehicle interior lighting device 1 is fixed to the mounting panel 100 arranged in the vehicle interior, with a portion of the vehicle interior lighting device 1 inserted from the interior side into a through-hole 101 formed in the mounting panel 100.

[0012] In the following description, of the first, second, and third directions that intersect with one another, the first direction will be referred to as the "front-rear direction X," the second direction will be referred to as the "width direction Y," and the third direction will be referred to as the "stacking direction Z." Here, the front-rear direction X, the width direction Y, and the stacking direction Z are approximately perpendicular to one another. The stacking direction Z typically corresponds to the axial direction of the vehicle interior lamp 1, the stacking direction of a bezel 10 (see FIG. 2 ) and a lens 50 (to be described later) of the vehicle interior lamp 1, the vertical direction of the vehicle, etc. The front-rear direction X typically corresponds to the radial direction of the vehicle interior lamp 1, the front-rear direction of the vehicle, etc. The width direction Y typically corresponds to the radial direction of the vehicle interior lamp 1, the vehicle width direction, etc. Furthermore, unless otherwise specified, the directions used in the following description will be described as directions in a state in which the vehicle interior lamp 1 is assembled to the mounting panel 100 of the vehicle.

[0013] Fig. 2 is an exploded perspective view of the vehicle interior lamp 1, Fig. 3 is a perspective view of the rear surface 20b side of the substrate 20 of the vehicle interior lamp 1, Fig. 4 is a plan view of the vehicle interior lamp 1, and Fig. 5 is a cross-sectional view of the vehicle interior lamp 1. As shown in Figs. 2 to 5, the vehicle interior lamp 1 includes, for example, a bezel 10, a substrate 20, a retainer 30, a reflector 40, and a lens 50. The bezel 10, the substrate 20, the retainer 30, the reflector 40, the lens 50, etc. are stacked one on top of the other along the stacking direction Z.

[0014] The bezel 10 has, for example, a function of engaging and fixing the vehicle interior lighting lamp 1 to the mounting panel 100, a function of accommodating and supporting the substrate 20, etc. Specifically, the bezel 10 is provided with an accommodation space 13 that is open toward the interior of the vehicle cabin on one side in the stacking direction Z. The accommodation space 13 is a recess that is recessed from an end face on one side of the bezel 10 in the stacking direction Z toward the other side in the stacking direction Z, and accommodates the substrate 20, retainer 30, reflector 40, lens 50, etc.

[0015] The bezel 10 is configured to include, for example, a cylindrical peripheral wall portion 16 that constitutes the accommodation space 13, and an annular flange portion 15 that protrudes radially outward from one end of the peripheral wall portion 16 in the stacking direction Z. The peripheral wall portion 16 covers the outer peripheries of the substrate 20, retainer 30, reflector 40, etc. that are accommodated in the accommodation space 13, and the flange portion 15 covers the outer periphery of the lens 50 that is accommodated in the accommodation space 13. The peripheral wall portion 16 is also provided with an annular window portion 16a that exposes an exposed surface 31a (described later) of the retainer 30 to the mounting panel 100 side.

[0016] Furthermore, the bezel 10 has, for example, a plurality of locking portions 11, 12 (see FIG. 4) provided on the outer peripheral surface of the peripheral wall portion 16. The plurality of locking portions 11, 12 each protrude in a claw-like shape from the peripheral wall portion 16 toward the outside in the radial direction of the bezel 10. Here, the peripheral wall portion 16 is provided with a plurality of locking portions 11 spaced apart from one another in the circumferential direction of the bezel 10, and locking portions 12 are also provided spaced apart from the locking portions 11 in the circumferential direction.

[0017] The locking portion 11 has, for example, a locking surface 11a (see FIG. 5) that locks with the peripheral portion of the through hole 101 of the mounting panel 100 in the stacking direction Z, and an inclined surface 11b facing the opposite side to the locking surface 11a. The inclined surface 11b is inclined so as to move outward in the width direction Y (radial direction) as it moves toward one side in the stacking direction Z. The locking portion 12 also has, for example, a locking surface 12a that locks with the peripheral portion of the through hole 101 of the mounting panel 100 in the stacking direction Z.

[0018] The multiple locking portions 11, 12 configured as described above are locked (engaged) with the through-hole 101 of the mounting panel 100 from one side in the stacking direction Z. Specifically, the vehicle interior illumination lamp 1 is tilted so that the locking portion 11 is positioned on one side in the stacking direction Z with respect to the locking portion 12, and in this state, the locking portion 12 is inserted obliquely into the through-hole 101 of the mounting panel 100. Next, one end portion (locking portion 11 side) of the vehicle interior illumination lamp 1 in the width direction Y is pushed up to the other side in the stacking direction Z so that the locking portion 11 is inserted into the through-hole 101. At this time, the inner surface of the through-hole 101 presses the inclined surface 11b of the locking portion 11 inward in the width direction Y (radial direction), and the inclined surface 11b overcomes the inner surface of the through-hole 101, causing the locking portion 11 to return to its free state. The locking surfaces 11a of the multiple locking portions 11 are locked to the peripheral edge of the through hole 101 in the stacking direction Z, and the locking surfaces 12a of the locking portions 12 are locked to the peripheral edge of the through hole 101 in the stacking direction Z, thereby preventing the vehicle interior lighting lamp 1 from moving (disengaging) to one side in the stacking direction Z relative to the mounting panel 100.

[0019] The bezel 10 also has, for example, a hood portion 14 that protrudes from the bottom of the accommodation space portion 13 toward the other side in the stacking direction Z. The hood portion 14 is formed in a generally cylindrical shape that opens toward the other side in the width direction Y (the locking portion 12 side). A connector 23 mounted on the back surface 20b of the substrate 20 is engaged with the hood portion 14. The connector 23 is provided such that, for example, a connection port 23a that is connected to a vehicle-side connector 110 is exposed from the hood portion 14 to the other side in the width direction Y. In the vehicle interior illumination lamp 1, power is supplied to the substrate 20 by electrically connecting the connector 23 and the vehicle-side connector 110, and the first light-emitting element 21, the second light-emitting element 22 (see FIG. 2 ), and the like of the substrate 20 emit light by the power.

[0020] The substrate 20 is formed, for example, from a printed wiring board or the like on which a plurality of electronic components are attached. The substrate 20 is housed in the housing space 13 of the bezel 10. The substrate 20 has a front surface 20a facing one side in the stacking direction Z and a back surface 20b facing the other side in the stacking direction Z. A first light-emitting element 21 for direct lighting and a second light-emitting element 22 for indirect lighting are attached to the front surface 20a of the substrate 20.

[0021] The first light-emitting element 21 and the second light-emitting element 22 are configured, for example, by LEDs (Light Emitting Diodes) or the like, and emit light based on different control signals. In this embodiment, a plurality (here, five) of first light-emitting elements 21 are provided at intervals from each other on the substrate 20, and a plurality (here, two) of second light-emitting elements 22 are also provided at intervals from each other on the substrate 20. In addition, the above-mentioned connector 23 (see FIG. 3) is mounted on the back surface 20b of the substrate 20.

[0022] Furthermore, a retainer 30 and a reflector 40 (see FIG. 5) are provided on one side of the substrate 20 in the stacking direction Z. The reflector 40 is intended to reflect light emitted from the first light-emitting element 21 for direct illumination toward the lens 50, for example, to increase brightness. The reflector 40 is configured to include, for example, a plurality of reflective walls 41 and a flange wall 42. Each of the plurality of reflective walls 41 is formed in a cylindrical shape surrounding the periphery of the first light-emitting element 21. Each of the plurality of reflective walls 41 is formed in a tapered shape whose diameter increases so that it widens outward in the width direction Y (radial direction) as it approaches one side of the stacking direction Z.

[0023] The flange wall 42 protrudes radially outward from one end of the plurality of reflective walls 41 in the stacking direction Z. The flange wall 42 is formed, for example, in a circular ring shape when viewed from the stacking direction Z, and connects the plurality of reflective walls 41. In this embodiment, the reflector 40 is formed into a plurality of segments, the outer periphery of which is surrounded by the flange wall 42, and the inner periphery of which is surrounded by five reflective walls 41 corresponding to the first light-emitting elements 21. The flange wall 42 faces the peripheral wall portion 16 (the inner surface of the window portion 16a) of the bezel 10 in the stacking direction Z, and holds the retainer 30 between the flange wall 42 and the peripheral wall portion 16. The reflector 40 is manufactured, for example, by injection molding of a synthetic resin.

[0024] Furthermore, a lens 50 is provided on one side of the reflector 40 in the stacking direction Z. The lens 50 covers, for example, one side of the reflector 40 in the stacking direction Z and diffuses the light of the first light-emitting element 21 reflected by the reflective wall 41 into the vehicle interior. In this embodiment, a back surface 50b of the lens 50 on the other side in the stacking direction Z is formed with a plurality of lens cut portions 51 for diffusing the light of the first light-emitting element 21. The lens 50 is formed, for example, from a transparent or translucent resin and transmits the light of the first light-emitting element 21 into the vehicle interior on one side in the stacking direction Z. The lens 50 has, for example, claw portions 52 (see FIG. 2 ) that engage with the flange portion 15 of the bezel 10, and the lens 50 is fixed to the bezel 10 by the engagement of the claw portions 52 with the flange portion 15.

[0025] Fig. 6 is a cross-sectional view showing the configuration of the retainer 30 of the vehicle interior illumination lamp 1, Fig. 7 is an enlarged view of the vicinity of the light introducing portion 33 of the retainer 30 of Fig. 6, and Fig. 8 is a cross-sectional view perpendicular to the circumferential direction of the retainer 30 of the vehicle interior illumination lamp 1. As shown in Figs. 6 to 8, the retainer 30 is positioned, for example, on one side of the substrate 20 in the stacking direction Z and serves to guide light emitted from the second light-emitting element 22 for indirect lighting toward the mounting panel 100. The retainer 30 is configured to include, for example, a light-guiding portion 31, an opaque portion 32 that covers the periphery of the light-guiding portion 31, and a light-introducing portion 33 that extends from the light-guiding portion 31 toward the second light-emitting element 22 in the stacking direction Z. The retainer 30 is also referred to as a light guide, etc.

[0026] The light guide 31 is configured, for example, in a circular ring shape along the peripheral wall 16 of the bezel 10. The light guide 31 is capable of guiding light from the second light-emitting element 22 in a circular ring shape. The light guide 31 is formed of a light-guiding material, for example, acrylic resin, polycarbonate, glass, polystyrene, urethane, or the like. The light guide 31 is, for example, colorless and transparent. The light guide 31 is held between the peripheral wall 16 of the bezel 10 (the inner surface of the window 16a) and the flange wall 42 of the reflector 40, with the periphery covered by the opaque portion 32.

[0027] Furthermore, the light guide 31 has, for example, a curved surface portion 35 (see FIG. 8 ) for diffusely reflecting the light of the second light-emitting element 22 within the light guide 31. The curved surface portion 35 is formed, for example, in a substantially U-shape that opens toward the other side in the stacking direction Z. The light guide 31 has, for example, a cross-sectional shape that includes the curved surface portion 35 and a linear portion that is connected to an end of the curved surface portion 35 and extends along the radial direction of the light guide 31. Here, the light guide 31 has a substantially crescent-shaped cross-sectional shape formed by the curved surface portion 35 and the linear portion. The light guide 31 is configured, for example, so that the light of the second light-emitting element 22 that is reflected by the curved surface portion 35 toward the mounting panel 100 is condensed.

[0028] The opaque portion 32 is made of, for example, an opaque member having light-blocking properties, and covers the periphery of the light guide 31 so as to expose the annular exposed surface 31a on the radially outer side of the light guide 31. That is, the opaque portion 32 has a substantially U-shaped cross section that opens radially outward of the light guide 31. The opaque portion 32 is formed in an annular shape that conforms to the light guide 31. The opaque portion 32 envelops and covers the surfaces of the light guide 31 other than the exposed surface 31a, thereby suppressing irradiation (leakage) of light from the second light-emitting element 22 from other than the exposed surface 31a of the light guide 31. The opaque portion 32 is molded integrally with the light guide 31, for example, by two-color molding or the like.

[0029] The opaque portion 32 is also provided with through holes 32a (see FIG. 7) through which the light introducing portions 33 penetrate in the stacking direction Z. In this embodiment, the opaque portion 32 is provided with a plurality of through holes 32a spaced apart from one another in correspondence with the light introducing portions 33 (second light-emitting elements 22). The through holes 32a are also inclined, for example, toward the other side in the width direction Y as they approach the other side in the stacking direction Z. Therefore, in this embodiment, the light introducing portions 33 inserted into the through holes 32a are also inclined with respect to the stacking direction Z.

[0030] The light introducing sections 33 are provided at positions in the light guiding section 31 corresponding to the second light emitting elements 22. Each light introducing section 33 has a flat end face 33a facing the second light emitting elements 22. Each light introducing section 33 guides light of the second light emitting elements 22 from the end face 33a on the second light emitting element 22 side toward the light guiding section 31 on the opposite side. In this embodiment, since the light introducing section 33 is inclined with respect to the stacking direction Z, the light of the second light emitting element 22 is reflected within the light introducing section 33 and guided along the circumferential direction of the light guiding section 31. The light introducing section 33 is formed of the same light guiding material as the light guiding section 31.

[0031] Fig. 9 is a plan view of the interior side of the vehicle interior illumination lamp 1. As shown in Fig. 9, in this embodiment, light from the second light-emitting element 22 is guided in an annular shape by the light-guiding portion 31 of the retainer 30, and is irradiated from the exposed surface 31a of the light-guiding portion 31 toward the mounting panel 100, which is radially outward of the vehicle interior illumination lamp 1. As a result, an annular light-emitting region T2 on the outer circumferential side of the flange portion 15 of the bezel 10 emits light.

[0032] Furthermore, in this embodiment, the light of the first light-emitting element 21 is reflected to one side in the stacking direction Z by the reflecting wall 41 of the reflector 40, and is diffused as it passes through the lens cut portion 51 of the lens 50, and is then irradiated into the vehicle interior. As a result, the light-emitting region T1 of the lens 50, i.e., the circular light-emitting region T1 located on the inner side of the boundary portion bordered in an annular shape by the flange portion 15 of the bezel 10, emits light.

[0033] As described above, in the vehicle interior lamp 1 of this embodiment, the retainer 30 has an annular light-guiding portion 31 that guides the light of the second light-emitting element 22, and an opaque portion 32 that has light-blocking properties and covers the periphery of the light-guiding portion 31 so that the light of the second light-emitting element 22 is irradiated from the radially outer annular exposed surface 31a of the light-guiding portion 31 toward the mounting panel 100. With this configuration, the vehicle interior lamp 1 can, for example, more efficiently or effectively irradiate the light for indirect illumination from the second light-emitting element 22 from the radially outer annular exposed surface 31a of the light-guiding portion 31 toward the mounting panel 100 by the opaque portion 32 of the retainer 30. As a result, the vehicle interior lamp 1 can more appropriately illuminate the vehicle interior directly and indirectly.

[0034] Moreover, in the vehicle interior illumination lamp 1 of this embodiment, the bezel 10 has a peripheral wall portion 16 that defines the accommodation space 13 and has an annular window portion 16a that exposes the exposed surface 31a of the light guiding portion 31 toward the mounting panel 100, and a flange portion 15 that protrudes radially outward from one end of the peripheral wall portion 16 in the stacking direction Z and annularly frames the outer periphery of the lens 50. With this configuration, the vehicle interior illumination lamp 1 can accommodate and assemble, for example, the retainer 30, the reflector 40, the lens 50, etc., in the accommodation space 13 using the peripheral wall portion 16, and the flange portion 15 can enhance the design of the boundary portion between the light-emitting region T1 for direct illumination using light irradiated from the first light-emitting element 21 to the lens 50 and the light-emitting region T2 for indirect illumination using light irradiated from the second light-emitting element 22 toward the mounting panel 100.

[0035] [First Modification] Fig. 10 is a cross-sectional view of a vehicle interior lamp 1A according to a first modified example, and Fig. 11 is a cross-sectional view perpendicular to the circumferential direction of the retainer 30 of the vehicle interior lamp 1A according to the first modified example. The vehicle interior lamp 1A shown in Figs. 10 and 11 has a configuration similar to that of the vehicle interior lamp 1 of the above embodiment. Therefore, the vehicle interior lamp 1A can obtain the same functions and effects as the above embodiment based on the similar configuration.

[0036] 10 and 11, this modification differs from the above embodiment in that a light guide portion 18 is provided on the flange portion 15 of the bezel 10. The light guide portion 18 has, for example, a function of adjusting the amount of light from the second light-emitting element 22 irradiated from the exposed surface 31a of the light-guiding portion 31 toward the mounting panel 100, and a function of adjusting the direction of the light from the second light-emitting element 22 irradiated from the exposed surface 31a toward the mounting panel 100.

[0037] Specifically, the light guide portion 18 protrudes from the flange portion 15 so as to overlap the window portion 16a, through which the exposed surface 31a is exposed, in the radial direction of the peripheral wall portion 16. The light guide portion 18 is configured, for example, in a circular ring shape along the window portion 16a (exposed surface 31a), and is provided around the entire circumference of the window portion 16a. The light guide portion 18 is configured, for example, by a reflective wall, and can adjust the amount and direction of light from the second light-emitting element 22 irradiated toward the mounting panel 100 by reflecting light from the second light-emitting element 22 reflected from the curved surface portion 35 of the light guiding portion 31 toward the light guide portion 18.

[0038] The light guide 18 may adjust the amount and direction of light from the second light-emitting element 22 irradiated toward the mounting panel 100 by, for example, blocking light from the second light-emitting element 22 reflected from the curved surface portion 35 of the light guiding element 31 toward the light guide 18. In this modification, the top of the light guide 18 is configured in an arc shape that is convex toward the other side in the stacking direction Z. The inner surface of the light guide 18 is formed to form a curved surface that is continuous with the curved surface portion 35 of the light guiding element 31.

[0039] As described above, in the vehicle interior lighting 1A of this modified example, the flange portion 15 is provided with the light guide portion 18, which protrudes so as to overlap radially with the window portion 16a and the peripheral wall portion 16, and which adjusts the amount or direction of light of the second light-emitting element 22 irradiated from the exposed surface 31a toward the mounting panel 100. With this configuration, the vehicle interior lighting 1A can, for example, adjust the amount or direction of light of the second light-emitting element 22 irradiated from the exposed surface 31a toward the mounting panel 100 by the light guide portion 18, and thus can prevent vehicle occupants from looking directly at the light of the second light-emitting element 22.

[0040] [Second Modification] Fig. 12 is a cross-sectional view of a vehicle interior lamp 1B according to a second modified example, and Fig. 13 is a cross-sectional view perpendicular to the circumferential direction of the retainer 30 of the vehicle interior lamp 1B according to the second modified example. The vehicle interior lamp 1B shown in Figs. 12 and 13 has a configuration similar to that of the vehicle interior lamp 1 of the above embodiment. Therefore, the vehicle interior lamp 1B can obtain the same functions and effects as the above embodiment based on the similar configuration.

[0041] 12 and 13, this modification differs from the above embodiment in that a plurality of curved surface portions 35 are provided in light guide 31. The plurality of curved surface portions 35 are intended to diffusely reflect light from second light-emitting element 22 within light guide 31. Specifically, in this modification, light guide 31 is provided with curved surface portions 35 on one side in stacking direction Z and on the other side in stacking direction Z, and has a cross-sectional shape in which the acute angle between curved surface portions 35 and linear portions in the above embodiment is chamfered.

[0042] If an acute angle portion were provided in the light guiding section 31, the light of the second light-emitting element 22 would become a point light at the acute angle portion, which could cause unevenness in the light of the second light-emitting element 22 irradiated from the exposed surface 31a toward the mounting panel 100. In this regard, in this modified example, since the light guiding section 31 is provided with a plurality of curved surface portions 35, the plurality of curved surface portions 35 can prevent the light guiding section 31 from having an acute angle portion, and thereby prevent the light of the second light-emitting element 22 from becoming a point light within the light guiding section 31.

[0043] As described above, in the vehicle interior illumination lamp 1B of this modified example, the light guiding section 31 has a plurality of curved surface portions 35 for diffusely reflecting the light of the second light-emitting element 22. With this configuration, the vehicle interior illumination lamp 1B can, for example, more efficiently or more effectively diffusely reflect the light of the second light-emitting element 22 within the light guiding section 31 by the plurality of curved surface portions 35, and as a result, can more uniformly irradiate the light of the second light-emitting element 22 from the exposed surface 31a toward the mounting panel 100 without unevenness.

[0044] [Third Modification] Fig. 14 is a cross-sectional view of a vehicle interior lamp 1C according to a third modified example, and Fig. 15 is a cross-sectional view perpendicular to the circumferential direction of the retainer 30 of the vehicle interior lamp 1C according to the third modified example. The vehicle interior lamp 1C shown in Figs. 14 and 15 has a configuration similar to that of the vehicle interior lamp 1 of the above embodiment. Therefore, the vehicle interior lamp 1C can obtain the same functions and effects as the above embodiment based on the similar configuration.

[0045] 14 and 15, this modification differs from the above embodiment in that a shadow lighting cover 60 is provided on the retainer 30 to cover the exposed surface 31a of the light guiding section 31. The shadow lighting cover 60 has the function of forming a shadow pattern 63 in the light of the second light-emitting element 22 that is irradiated from the exposed surface 31a toward the mounting panel 100, for example.

[0046] Specifically, the shadow lighting cover 60 has an annular cover portion 61 (see FIG. 16 ) that conforms to the exposed surface 31a of the light guide portion 31, and the cover portion 61 covers the entire periphery of the exposed surface 31a. The cover portion 61 is formed with a shading pattern 62 that includes, for example, transmissive regions 62a that transmit light from the second light-emitting elements 22 and shading regions 62b that block light from the second light-emitting elements 22. The transmissive regions 62a and shading regions 62b of the shading pattern 62 are alternately arranged along the circumferential direction of the cover portion 61. The shading pattern 62 is formed, for example, by adhering a plurality of strip-shaped light-shielding tapes to the outer peripheral surface of the cover portion 61 at intervals in the circumferential direction. The cover portion 61 is made of, for example, a light-transmissive material.

[0047] Fig. 16 is a perspective view of the shadow lighting cover 60 of the vehicle interior illumination lamp 1C, and Fig. 17 is a perspective view showing a shadow pattern 63 projected through the shadow lighting cover 60. As shown in Figs. 16 and 17, in this modification, the light of the second light-emitting element 22 irradiated from the exposed surface 31a of the light-guiding section 31 toward the mounting panel 100 passes through the transmission region 62a of the shadow lighting cover 60, but is blocked by the light-blocking region 62b. As a result, a shadow pattern 63 that follows the shadow pattern 62 of the shadow lighting cover 60 is formed on the mounting panel 100.

[0048] As described above, the vehicle interior illumination lamp 1C of this modified example further includes the shadow lighting cover 60 that covers the exposed surface 31a of the light guiding section 31, and the shadow lighting cover 60 forms a shadow pattern 63 in the light of the second light-emitting element 22 that is irradiated from the exposed surface 31a toward the mounting panel 100. With this configuration, the vehicle interior illumination lamp 1C can, for example, enhance the design of the indirect lighting provided by the light of the second light-emitting element 22 by the shadow pattern 63 formed on the mounting panel 100.

[0049] The shading pattern 62 of the shadow lighting cover 60 is not limited to this example, and for example, a mesh-like shading pattern 62 may be formed on the outer peripheral surface of the shadow lighting cover 60A, as in the modified examples shown in Figures 18 and 19. In the shadow lighting cover 60A, light from the second light-emitting element 22 irradiated from the exposed surface 31a of the light-guiding section 31 toward the mounting panel 100 passes through the transmission regions 62a of the mesh-like shading pattern 62, but is blocked by the light-blocking regions 62b. As a result, a shading pattern 63 that follows the mesh-like shading pattern 62 of the shadow lighting cover 60A is formed on the mounting panel 100.

[0050] While the above describes exemplary embodiments and modifications of the present invention, these are merely examples and are not intended to limit the scope of the invention. The above embodiments and modifications can be implemented in various other forms, and various omissions, substitutions, combinations, and modifications can be made without departing from the spirit of the invention. Furthermore, the specifications of each configuration, shape, and the like (structure, type, direction, format, size, length, width, thickness, height, number, arrangement, position, material, etc.) can be modified as appropriate. [Explanation of symbols]

[0051] 1, 1A, 1B, 1C Vehicle interior lighting 10 Bezel 11, 12 Locking part 13 Storage space 15 Flange 16 Peripheral wall section 18 Light guide unit 20 Substrate 21 First light-emitting element 22 Second light-emitting element 30 Retainer 31 Light guide section 31a Exposed surface 32 Opaque area 35 Curved surface shape part 40 Reflector 41 Reflection Wall 50 lenses 60, 60A Shadow Lighting Cover 63 Shading 100 Mounting Panel Z stacking direction

Claims

1. a bezel having a locking portion that is locked to a mounting panel of a vehicle and having an accommodation space that is open toward the vehicle interior on one side in a stacking direction that intersects with the mounting panel; a substrate that is accommodated in the accommodation space of the bezel and has a first light-emitting element for direct illumination and a second light-emitting element for indirect illumination on one side in the stacking direction; a retainer positioned on one side of the substrate in the stacking direction and including an annular light guiding portion that guides light from the second light emitting element, and an opaque portion that has a light blocking property and covers the periphery of the light guiding portion so that the light from the second light emitting element is irradiated toward the mounting panel from an annular exposed surface on the radially outer side of the light guiding portion; a reflector positioned on one side of the substrate in the stacking direction, surrounding the first light-emitting element and having a reflection wall that reflects light from the first light-emitting element to one side in the stacking direction; a lens that covers one side of the reflector in the stacking direction and diffuses the light of the first light-emitting element reflected by the reflective wall into the vehicle interior; An interior lighting lamp for a vehicle.

2. The bezel has a peripheral wall portion that constitutes the accommodation space and has an annular window portion that exposes the exposed surface of the light guide portion to the mounting panel side, and a flange portion that protrudes radially outward from one end of the peripheral wall portion in the stacking direction and annularly borders the outer periphery of the lens.

2. The vehicle interior lighting lamp according to claim 1.

3. The flange portion is provided with a light guide portion that protrudes so as to overlap the window portion and the peripheral wall portion in a radial direction and adjusts the amount or direction of light of the second light-emitting element irradiated from the exposed surface toward the mounting panel.

3. The vehicle interior lighting lamp according to claim 2.

4. The light guide portion has a plurality of curved surface portions for diffusely reflecting the light of the second light emitting element.

3. The vehicle interior lighting lamp according to claim 1 or 2.

5. A shadow lighting cover is further provided to cover the exposed surface of the light guide portion, The shadow lighting cover forms a shadow pattern in the light of the second light emitting element irradiated from the exposed surface toward the mounting panel.

3. The vehicle interior lighting lamp according to claim 1 or 2.

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